EP1097254B1 - Procede de revetement de mousse pour la fabrication d'elements d'antennes - Google Patents
Procede de revetement de mousse pour la fabrication d'elements d'antennes Download PDFInfo
- Publication number
- EP1097254B1 EP1097254B1 EP99926541A EP99926541A EP1097254B1 EP 1097254 B1 EP1097254 B1 EP 1097254B1 EP 99926541 A EP99926541 A EP 99926541A EP 99926541 A EP99926541 A EP 99926541A EP 1097254 B1 EP1097254 B1 EP 1097254B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- foam
- block
- process according
- bath
- graphite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
- H01Q13/16—Folded slot antennas
Definitions
- the invention relates to the field of manufacturing elements antennas. It will be noted that, in the present description, by the terms “antenna elements”, both the antennas themselves, microwave circuits (such as waveguides in particular) associated with these, the heat sinks and the housings of shielding associated with such antennas and circuits microwave.
- antenna elements both the antennas themselves, microwave circuits (such as waveguides in particular) associated with these, the heat sinks and the housings of shielding associated with such antennas and circuits microwave.
- the present invention particularly finds its application for the realization of antennas in three dimensions.
- foams have been mainly used as shims or stiffening support for circuits.
- the main objective of the present invention is to present a process which allows the easy realization of antennas in three dimensions. Such three-dimensional antennas indeed find many applications.
- Another object of the present invention is to describe such a process which also allows the deposition of graphite layers on blocks of foam to form coatings that can be used as energy adaptation or dissipation charges residual antenna elements, such as waveguides.
- Yet another object of the present invention is to provide such a method which can be implemented at low cost, according to a high reproducibility, and according to simple implementation steps.
- the invention therefore proposes to dip all or part of a block of polyvinyl chloride foam in a metallization bath and a graphite bath allowing the deposition of metal and graphite on a given surface of the block.
- Metallization baths and graphite baths which can to be used are known from the state of the art and used conventionally for metallization and the deposition of a coating of graphite on metal supports.
- the method can be implemented on only one side of a block of foam.
- the method according to the present invention finds all particularly its application for the realization of antennas in three dimensions. Consequently, according to a preferred variant of the invention, the method comprises a step consisting in dipping all of said block of polyvinyl chloride foam in said metallization bath and said graphite bath.
- the soaking time of the foam block in the bath metallization and the graphite bath can be easily determined by those skilled in the art depending on the nature of the bath used. However, generally speaking, this soaking time will generally be between 10 minutes and 20 minutes.
- the process will find everything particularly its interest for the realization of antennas in three dimensions, especially when these have a shape complex.
- the block of foam therefore has an irregular shape incorporating at least one non-planar face.
- this block of foam will have at least a hole and / or a slot which can, thanks to the process, be fully metallized or coated with graphite.
- Such holes advantageously have a diameter greater than or equal to 0.2 mm.
- the treatment bath used can either be a metallization or a graphite bath.
- the method according to the invention can be used to carry out antenna elements having certain metallized surfaces and some graphite coated surfaces. This is why according to a interesting variant of the process, it comprises at least one step of soaking at least part of a surface of a block of foam in a metallization bath and at least one step consisting of dipping at least part of a surface of said block of foam in a graphite bath.
- the method according to the invention includes a preliminary step of coating one or more parts of the surface of said foam block with one or more elements forming cover (s) and removing said element (s) cover (s) after said soaking step. It will thus be possible to manufacture antenna elements including certain parts will not be metallized, in particular to coat these parts not subsequently metallized of graphite.
- the method comprises a step consisting in eliminating said layer of metal deposited on one or more several parts of the surface of said foam block. This step removal of part of the metal layer on one or more parts of the surface of the foam block can be made in also removing part of this foam block.
- the metallization baths used will be baths containing a metal preferably chosen from the group consisting of copper, nickel, gold, silver, titanium.
- the method comprises also at least one chemical and / or physico-chemical step of preparation of the surface condition of said block of foam aimed at improve the deposition of metal and graphite.
- the method according to the invention comprises a subsequent step of depositing a metal by electrochemistry on the part of said block of foam previously metallized.
- foams can be used to implement the method according to the invention from the moment it presents a pH below 7.
- foam is made up by certain foams based on polyvinyl chloride.
- the invention also covers any antenna element produced thanks to the process according to the invention characterized in that it consists by a block of foam of which at least part of at least one of faces is coated with a layer of metal in direct contact with said foam.
- Said antenna element comprises at least a metallized part and at least a part coated with a layer of graphite.
- blocks of foam different sizes and shapes have been metallized and in some cases, provided on some of their faces with graphite.
- a foam marketed was used under the name DIVINYCELL marketed by the company Divinycell international, 18 hui des Moissons, 94263 Fresnes Cedex, France.
- foam blocks were pre-treated aimed at preparing their surfaces for the action of a metallization.
- the pre-treatment consisted of dipping the blocks in a degreaser (reference 813) for 4 min then in an acid bath sulfuric at 3% for 2 minutes neutralizing the degreasing product.
- the blocks of foam were then rinsed with tap water for 2 minutes before being soaked for 3 minutes in a conditioning bath "Circuposit catalyst 3344" consisting of a colloidal tin-palladium system allowing metallization by catalysis. Blocks of foam were then rinsed with tap water for 2 min and then soaked in an accelerator bath "19H" for 2 min promoting the start of the metal depot.
- the blocks thus prepared were soaked in a metallization bath to copper base and marketed under the trade name "CH 251" for 20 minutes depending on the case.
- This bath is a stabilized bath at EDTA, the formulation of which makes it possible to obtain a copper deposit uniform.
- a first rinse was carried out with water city for 3 minutes then a second rinse with distilled water for 2 min.
- the metallized blocks were then dried in the oven for 30 min at 45 ° C.
- the block shown in Figure 1 thus metallized has a section 1 in V and a hole 2 metallized. At the angle of the V, the metal layer deposited was removed by scraping (the use of a protective tape during metallization could also have been used) to form a feed slot 3.
- the metallized block shown in Figure 5 constitutes an antenna patch and shows a U-shaped slot 4 and a connector coaxial feed 5.
- the metallized block constituting a "magic t" shown in part to FIG. 4 constitutes a microwave power supply device which feeds two antennas either in phase (Sum 6 channel) or in phase opposition (Difference channel 7).
- V shape is an example and allows improves energy absorption and therefore improves load performance.
- foam blocks treated according to the invention may therefore have different sizes and shapes from those indicated without departing from the scope of the invention.
- Other metallization or graphite baths may also be used.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Chemically Coating (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Details Of Aerials (AREA)
- Aerials With Secondary Devices (AREA)
- Waveguide Aerials (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Description
- le dépôt des mousses sur semelles métalliques épaisses ;
- la sérigraphie en couches épaisses ;
- le pressage à chaud d'un film plastique tel que du polypropylène préalablement métallisé ;
- la vaporisation à vide en couche mince.
- la figure 1 représente une vue en perspective d'une antenne 3D métallisée selon le procédé de l'invention ;
- les figures 2 et 3 montrent les courbes d'adaptation en impédance d'une telle antenne;
- la figure 4 montre les courbes d'adaptation en impédance d'une telle antenne ;
- la figure 5 représente une vue en perspective d'une antenne-pastille métallisée selon le procédé de l'invention ;
- la figure 6 montre le diagramme d'adaptation d'une telle antenne ;
- la figure 7 montre une vue en perspective d'un "té-magique", constituant un circuit hyperfréquence, réalisé selon le procédé selon l'invention.
Claims (11)
- Procédé de fabrication d'un élément d'antenne caractérisé en qu'il comprend :au moins une étape chimique et/ou physico-chimique de préparation de l'état de surface d'un bloc de mousse à base de polychlorure de vinyle visant à améliorer le dépôt de métal et de graphite sur celui-ci, ladite étape de préparation incluant une étape consistant à tremper ledit bloc dans un bain d'acide ;au moins une étape consistant à tremper au moins une partie d'une surface dudit bloc de mousse dans un bain de métallisation et au moins une étape consistant à tremper au moins une partie d'une surface dudit bloc de mousse dans un bain de graphite pendant un temps suffisant pour revêtir au moins une partie dudit bloc de mousse d'une couche de métal et de graphite.
- Procédé selon la revendication 1 caractérisé en ce qu'il comprend une étape consistant à tremper intégralement ledit bloc de mousse à base de polychlorure de vinyle dans ledit bain de métallisation.
- Procédé selon l'une quelconque des revendications 1 ou 2 caractérisé en ce que ledit temps de trempage dudit bloc de mousse dans ledit bain de métallisation et ledit bain de graphite est compris entre 10 mn et 20 mn.
- Procédé selon l'une quelconque des revendications 1 à 3 caractérisé en ce que ledit bloc de mousse présente une forme irrégulière intégrant au moins une face non plane.
- Procédé selon l'une des revendications 1 à 4 caractérisé en ce que ledit bloc de mousse présente au moins un trou et/ou une fente.
- Procédé selon la revendication 5 caractérisé en ce que ledit trou présente un diamètre supérieur ou égal à 0,2 mm.
- Procédé selon l'une quelconque des revendications 1 à 6 caractérisé en ce qu'il comprend une étape préliminaire consistant à revêtir une ou plusieurs parties de la surface dudit bloc de mousse avec un ou plusieurs éléments formant cache(s) et à retirer le ou lesdits éléments formant cache(s) après ladite étape de trempage.
- Procédé selon l'une quelconque des revendications 1 à 6 caractérisée en ce qu'il comprend une étape consistant à éliminer ladite couche de métal déposée sur une ou plusieurs parties de la surface dudit bloc de mousse.
- Procédé selon l'une quelconque des revendications 1 à 8 caractérisé en ce que ledit métal est choisi dans le groupe constitué par le cuivre, le nickel, l'or, l'argent, le titane.
- Procédé selon l'une quelconque des revendications 1 à 9 caractérisé en ce qu'il comprend une étape ultérieure de dépôt d'un métal par électrochimie sur la partie dudit bloc de mousse préalablement métallisée.
- Elément d'antenne réalisé grâce au procédé selon l'une quelconque des revendications 1 à 10 caractérisé en ce qu'il comprend au moins une partie métallisée et au moins une partie revêtue d'une couche de graphite.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9808182 | 1998-06-24 | ||
FR9808182A FR2780319B1 (fr) | 1998-06-24 | 1998-06-24 | Procede de revetement de mousse pour la fabrication d'elements d'antennes |
PCT/FR1999/001527 WO1999067441A1 (fr) | 1998-06-24 | 1999-06-24 | Procede de revetement de mousse pour la fabrication d'elements d'antennes |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1097254A1 EP1097254A1 (fr) | 2001-05-09 |
EP1097254B1 true EP1097254B1 (fr) | 2003-10-08 |
Family
ID=9527950
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99926541A Expired - Lifetime EP1097254B1 (fr) | 1998-06-24 | 1999-06-24 | Procede de revetement de mousse pour la fabrication d'elements d'antennes |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1097254B1 (fr) |
JP (1) | JP2002518964A (fr) |
AT (1) | ATE251679T1 (fr) |
AU (1) | AU4375299A (fr) |
DE (1) | DE69911969T2 (fr) |
FR (1) | FR2780319B1 (fr) |
WO (1) | WO1999067441A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2838245A1 (fr) * | 2002-04-04 | 2003-10-10 | Thomson Licensing Sa | Structure d'antenne compacte |
FR2845526A1 (fr) * | 2002-10-07 | 2004-04-09 | Thomson Licensing Sa | Procede de fabrication d'une antenne hyperfrequences en technologie guide d'onde |
KR101528635B1 (ko) * | 2013-11-15 | 2015-06-17 | (주)씨어스테크놀로지 | 열 분산 기능의 내장형 안테나 |
CN105063583A (zh) * | 2015-08-12 | 2015-11-18 | 深圳市信维通信股份有限公司 | 一种银镀层lds天线及其制作方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2469203A1 (fr) * | 1979-11-09 | 1981-05-22 | Thomson Csf | Procede de fabrication de matiere absorbante pour les ondes hyperfrequences, dispositif de mise en oeuvre du procede et matiere absorbante ainsi constituee |
EP0160406B1 (fr) * | 1984-04-06 | 1989-09-20 | Bridgestone Corporation | Articles électro-conducteurs et méthode de fabrication de ceux-ci |
DE3613060A1 (de) * | 1986-04-18 | 1987-10-22 | Herberts Gmbh | Ueberzugsmittel mit hoher elektrischer leitfaehigkeit und dessen verwendung zur herstellung von ueberzuegen |
FR2711845B1 (fr) * | 1993-10-28 | 1995-11-24 | France Telecom | Antenne plane et procédé de réalisation d'une telle antenne. |
FR2713139B1 (fr) * | 1993-12-03 | 1995-12-29 | Loic Demeure | Support métallisé à base de mousse organique, assemblage d'au moins deux de ces supports et procédé de fabrication de ce support. |
DE19627413C1 (de) * | 1996-07-08 | 1997-02-27 | Deutsche Automobilgesellsch | Verfahren zum kontinuierlichen Metallisieren poröser Kunststoffsubstrate auf naßchemischem Weg |
-
1998
- 1998-06-24 FR FR9808182A patent/FR2780319B1/fr not_active Expired - Fee Related
-
1999
- 1999-06-24 AU AU43752/99A patent/AU4375299A/en not_active Abandoned
- 1999-06-24 AT AT99926541T patent/ATE251679T1/de not_active IP Right Cessation
- 1999-06-24 WO PCT/FR1999/001527 patent/WO1999067441A1/fr active IP Right Grant
- 1999-06-24 JP JP2000556079A patent/JP2002518964A/ja active Pending
- 1999-06-24 EP EP99926541A patent/EP1097254B1/fr not_active Expired - Lifetime
- 1999-06-24 DE DE69911969T patent/DE69911969T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP1097254A1 (fr) | 2001-05-09 |
DE69911969T2 (de) | 2004-08-12 |
DE69911969D1 (de) | 2003-11-13 |
FR2780319B1 (fr) | 2001-07-27 |
AU4375299A (en) | 2000-01-10 |
FR2780319A1 (fr) | 1999-12-31 |
ATE251679T1 (de) | 2003-10-15 |
JP2002518964A (ja) | 2002-06-25 |
WO1999067441A1 (fr) | 1999-12-29 |
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